[issue10769] ast: provide more useful range information

[Raymond Hettinger]

Raymond Hettinger <rhettinger at users.sourceforge.net> added the comment:

If info fields are added, they need to be optional so that someone manipulating the tree (adding, rearranging, or removing nodes) doesn't have an additional burden of supplying this info before compiling into an executable code object.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10769>
_______________________________________